Tsz Wo Nicholas Sze created HDFS-7063:
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Summary: WebHDFS: Avoid using sockets in datanode when the traffic
is local
Key: HDFS-7063
URL: https://issues.apache.org/jira/browse/HDFS-7063
Project: Hadoop HDFS
Issue Type: Improvement
Components: webhdfs
Reporter: Tsz Wo Nicholas Sze
When a WebHDFS client accesses a local replica in a Datanode, the Datanode uses
DFSClient and connects to itself using a socket via DataTransferProtocol. The
socket connection is unnecessary. It can be avoided such as using
PipedInputStream and PipedOutputStream.
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